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CVE-2026-26314

Go Ethereum affected by DoS via malicious p2p message

Published: Feb 19, 2026Updated: Feb 23, 2026 Sources: CVE List NVD GHSACWE-20
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.6%
Top 56.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

go-ethereum (geth) is a golang execution layer implementation of the Ethereum protocol. Prior to version 1.16.9, a vulnerable node can be forced to shutdown/crash using a specially crafted message. The problem is resolved in the v1.16.9 and v1.17.0 releases of Geth.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-20

Affected Products

go ethereumethereum
Mixed
OSS Libraries / generic-library
go-ethereumethereum
Mixed
OSS Libraries / generic-library
github.com/ethereum/go-ethereumGoOSS Libraries
ethereumoss-projectOSS Librariesaka go ethereum, go-ethereum, cpp-ethereum
gopackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://github.com/ethereum/go-ethereum/commit/895a8597cb16c02203e38707ed2d1da5c500fe60
github.com
https://github.com/ethereum/go-ethereum/releases/tag/v1.16.9
github.com
https://github.com/ethereum/go-ethereum/security/advisories/GHSA-2gjw-fg97-vg3r
github.com
and 3 more references View all →

Timeline

Published
Feb 19, 2026
Last Updated
Feb 23, 2026

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